patch 7.4.777
Problem:    The README file doesn't look nice on github.
Solution:   Add a markdown version of the README file.
diff --git a/Filelist b/Filelist
index 5223754..1dc7fd0 100644
--- a/Filelist
+++ b/Filelist
@@ -481,6 +481,7 @@
 # runtime files for all distributions
 RT_ALL =	\
 		README.txt \
+		README.md \
 		runtime/bugreport.vim \
 		runtime/doc/*.awk \
 		runtime/doc/*.pl \